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AssigneeCPS Technology Holdings LLC
InventorsM. Eric Taylor, Jianxun Hu, Glenn W. Andersen, Joseph F. Mathews, Bart William Sauer, James S. Symanski, Feng Xue, Mohamadkheir Alkhateeb
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A battery grid is disclosed. The battery grid includes a pattern of grid wires. The pattern includes a grid wire having a first segment with a first corrosion resistance and a second segment with a second corrosion resistance which is less than the first corrosion resistance. The second segment corrodes at a rate which is faster than the corrosion rate of the first segment so as to dynamically release internal stress and control grid growth of the battery grid during its service life. A battery includes said grid and a method of forming said grid are also disclosed.
A lead-acid battery comprising a plurality of stamped, positive battery grid plates each having a frame with a top, a first side, a second side, and a bottom, wherein the top has a lug, and further wherein a plurality of grid wires having a first microstructure are interconnected within each of the frames to create interstices therebetween, the positive battery grid plates alternating with negative battery grid plates and interleaved with separators to form a stack, the stack fitting within a battery housing, one or more of the plurality of grid wires of the positive battery grid plates having a primary deformation of a first magnitude at one or more pre-selected locations, the first magnitude being an insufficient magnitude to alter the first microstructure, and one or more of the plurality of grid wires of the positive battery grid plates having a secondary deformation of a second magnitude greater than the first magnitude imparted upon the one or more of the plurality of grid wires at one or more pre-selected locations, the second magnitude being a magnitude sufficient to alter the first microstructure into a second microstructure different from the first microstructure.
A lead-acid battery comprising a plurality of stamped, positive battery grid plates each having a frame with a top, a first side, a second side, and a bottom, wherein the top has a lug, and further wherein a plurality of grid wires having a first microstructure are interconnected within each of the frames to create interstices therebetween, the positive battery grid plates alternating with negative battery grid plates and interleaved with separators to form a stack, the stack fitting within a battery housing, one or more of a plurality of the grid wires of the positive battery grid plates having one or more primary deformations of a first magnitude, wherein the first magnitude is of an insufficient magnitude to alter the first microstructure, and one or more of the grid wires having a secondary deformation of a second magnitude greater than the first magnitude, wherein the secondary deformation is of a sufficient magnitude to alter the first microstructure into a second microstructure different from the first microstructure and which is more susceptible to corrosion and is formed in the grid wires at pre-selected locations.
Dependencies are inferred from the claim text.